Temperature-controlled valve.



C. F. JOHNSON.

TEMPERATURE CONTROLLED VALVE.

APPLICATION FILED JUNE 18, 1914.

Patented Feb. 9, 1915.

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' CHESTER F. JOEVSON, 0F DETROI'll, MICHIGAN.

TEMPERATURE-CONTROLLED VALVE.

Specification of Letters Patent.

Patented Feb. 9, 1915.

Application filed June as, 1914. Serial No. 845,749.

1 '0 aZZ/wii am it may concern: I .Be it known that I, Cnus'rnn F. Jonnsos, acitizen of the United States, and a residerit of Detroit,v in the county of Wayne and State of Michigan, have invented a new and Improved Temperature-Controlled Valve, of which thedollowing is -a specification.

This invention relates to means for controlling the mixing of liquids of diflerent temperatures, and its obg'ect is to provide a simple and eflicient valve which shall be adapted to stop orred'lice thejfiow of aliquid of higher temperature and to permit or increase the flow of a. liquid of lower temperature when the mixture of the two liquids is below this 20 r avoiding friction, and said valve, said means scale, Similar reference. characters refer to like is above a predetermined temperature and falls.

In the accompanying drawing, 1

is a vertical section of'this improved valve.

*ig. 2 is a plan'o'f the sameon a smaller parts throughout the several'views. V

The body 1.035 the valve has an outlet 2 extending in any desired direction, an inlet liquid of comparatively low temper-ature, and an inlet 4.--for a liquid of highertemperaturea pipe 5 shown connected to the latter. The bottom of the valve'is preferably cup-shaped to receive the drain-cock 6 so that sediment may be removed. Vegetable and mineral fibers and otherimpurities'that enter through the inlets, instead'of lodging between the valve and its seats and thus interfering with the movements of the valve, will fall into the cup ,1 1.- .The movements of the valve can be observed by unscrewing'the' drain cock 6. and looking up into the body 1. A head 7 maybe-secured to the body by means of screws 8 and may suppbrt one end of the "preferably of thermostat 9, of any" desired construction,

metal rings,

-. ting an increase of theflow with each other.

.with each other connected as shown ing ends 10 and 12, the former connecting to the head 7 and the latter carrying a pivot 13; The container portion of this thermostat is preferably filled with a liquid having a high rate of expansion, such as chloroform, carbon bisulfid or benzole. Extending down from the head 7 is an arm 15, pivot 16 on which the valve which carries a 17 is connects to the lower end of the thermostat by means of. the-pivot 13. This valve is swung against the seat 19 when the liquid within the thermostat contracts, because of the resilience. of thefmetal rings vforming the thermostat, and it swings against the seat 20 when the-liquid has expanded to a predetermined degree. When the hotter and cooler liquids enter the valve body at ,such temperatures and in equal amounts that the hquid passing out through the outlet 2 is at a predetermined temperature, the valve may be held substantially central. But 1 thermostat will expand and the valve be swung toward the seat 20,

17 will thus reducing in the drawing and havthe temperature of the mixture rises, the

mounted. An 'arm 18 on the valve the inflow of the hotter liquid (and permitof the cooler liquid. On the other band, should the tern perature ofthe water-surrounding the ther- 'mostat fall, the inflowof the'cooler liquid will be.reduced by the swinging of the valve towardthe seat 19. 1 4

The openingsthrough which the liquids flow into the body are shown to be in' line i The distance between the seats 19 and20 will depend u on the thickness of the valve 17, the leng h 18,the rate of expansion of the thermostat, and the allowable variation in the temperaof the arm ture otthe' liquid flowing. from the outlet 2*.

I claim 1.7In a control valve, the combination of a body having two inlet passages in line and an outlet passage, a valve pivotally mounted said inlet passages, and a thermostat within thcbody connected to the 'valve to move it toward one or the other passage as the temperature of the medium within surroundiiig the thermostat changes.

to swing between.

the body 2. In a control valve, the combination of a body having-an outlet passage and two inlet passages in line with each other, a disk valve mounted between the inner ends of the passages, means to support the valve, an arm on the valve, a cover for the valve body, and a thermostat within the valve body,-consisting of an expansiblecylinder, connecting to said arm on said valve and said covei for swinging the valve between said inner ends of the passages as the temperature of the contents of the body changes.

3. In a control valve, the combination of a top for the same, an arm extending down fromsaid top, a valve pivotally mounted on the free end of the arm, a thermostat mounted within the body and connected to the valve to swing the same as the temperature varies, and pipes extending into the body in line with each otherand on op posite sides of the valve so that the'impacts of the liquids issuing from said pipes on the valve may be substantially balanced, said body having an outlet for the liquids entering through said pipes.

- 4:. In a control valve, the combination of a body having two inlet openings and an outlet opening, a valve pivotally mounted to swing between said inlet openings, and a a body,

thermostat within the body connected to the valve to move it toward one or the other opening as the temperature of the medium surrounding the thermostat within the body In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

' CHESTER F. JOHNSON.

I/Vitnesses:

EDWARD N. PAGnLsEN,

L. SPENCER.

opposite sides of the valve so, 

